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<div><a href="../../index.html">Home</a> &gt;  <a href="../index.html">matgraph</a> &gt; <a href="index.html">@graph</a> &gt; draw_labels.m</div>

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<h1>draw_labels
</h1>

<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="box"><strong>draw_labels(g) --- add labels to a drawing of g</strong></div>

<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="box"><strong>function draw_labels(g,offset) </strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="fragment"><pre class="comment"> draw_labels(g) --- add labels to a drawing of g
 assuming g has already been drawn in a figure window (with draw or cdraw)
 add labels to the drawing. 
 Note: draw(g); add_labels(g) is tantamount to ldraw(g)
 If the drawing already has vertex numbers, this might make a mess.

 An optional second argument gives an offset of the label away from the
 vertex: draw_labels(g, [dx, dy]) moves the label dx to the right and dy
 up. Suggested offset: [0.1, -0.1]</pre></div>

<!-- crossreference -->
<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
This function calls:
<ul style="list-style-image:url(../../matlabicon.gif)">
<li><a href="get_label.html" class="code" title="function out = get_label(g,v)">get_label</a>	get_label(g) or get_label(g,v) --- get vertex label(s)</li><li><a href="getxy.html" class="code" title="function z = getxy(g)">getxy</a>	getxy(g) --- give g's embedding (or [] if g doesn't have one)</li><li><a href="is_labeled.html" class="code" title="function yn = is_labeled(g)">is_labeled</a>	is_labeled(g) --- determine if there are labels on vertices.</li><li><a href="label.html" class="code" title="function label(g,v,name)">label</a>	Assign labels to vertices of g</li><li><a href="nv.html" class="code" title="function n = nv(g)">nv</a>	nv(g) --- number of vertices in g</li></ul>
This function is called by:
<ul style="list-style-image:url(../../matlabicon.gif)">
<li><a href="ldraw.html" class="code" title="function ldraw(g,line_style)">ldraw</a>	ldraw(g,line_style) --- draw a graph with vertices marked with their labels</li></ul>
<!-- crossreference -->


<h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function draw_labels(g,offset)</a>
0002 <span class="comment">% draw_labels(g) --- add labels to a drawing of g</span>
0003 <span class="comment">% assuming g has already been drawn in a figure window (with draw or cdraw)</span>
0004 <span class="comment">% add labels to the drawing.</span>
0005 <span class="comment">% Note: draw(g); add_labels(g) is tantamount to ldraw(g)</span>
0006 <span class="comment">% If the drawing already has vertex numbers, this might make a mess.</span>
0007 <span class="comment">%</span>
0008 <span class="comment">% An optional second argument gives an offset of the label away from the</span>
0009 <span class="comment">% vertex: draw_labels(g, [dx, dy]) moves the label dx to the right and dy</span>
0010 <span class="comment">% up. Suggested offset: [0.1, -0.1]</span>
0011 
0012 <span class="keyword">if</span> (~<a href="is_labeled.html" class="code" title="function yn = is_labeled(g)">is_labeled</a>(g))
0013     <a href="label.html" class="code" title="function label(g,v,name)">label</a>(g)
0014 <span class="keyword">end</span>
0015 
0016 <span class="keyword">if</span> nargin == 1
0017     offset = [0 0];
0018 <span class="keyword">end</span>
0019 
0020 xy = <a href="getxy.html" class="code" title="function z = getxy(g)">getxy</a>(g);
0021 n = <a href="nv.html" class="code" title="function n = nv(g)">nv</a>(g);
0022 
0023 <span class="keyword">for</span> v=1:n
0024     x = xy(v,1) + offset(1);
0025     y = xy(v,2) + offset(2);
0026     text(x,y,<a href="get_label.html" class="code" title="function out = get_label(g,v)">get_label</a>(g,v)); 
0027 <span class="keyword">end</span></pre></div>
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